title: [Design and application of the expanded transposition flaps in the treatment of cheek skin defects].
abstract: OBJECTIVE
  To introduce the design and application of the expanded transposition skin flap in the treatment of cheek skin defects.
  
  
  METHODS
  The expanded transposition flaps were divided into three types: the regular expanded transposition flap (ERT flap), the expanded transposition-advancement-transposition flap (TAT flap) and the expanded rotation-advancement-transposition flap (RAT flap). 135 cases of cheek skin defects resulted from hemangioma, scar and naevi were treated with these three types of flaps. Delay surgery was needed when the ratio of length to width was bigger than 2 : 1.
  
  
  RESULTS
  There were 139 expanded transposition flaps, including 17 ERT flaps, 69 TAT flaps, 53 RAT flaps. Blood supply disturbance was happened at the end of the flaps in 6 cases, including 2 ERT flaps and 4 other flaps. Other flaps had no complication. The results were satisfactory.
  
  
  CONCLUSIONS
  The expanded transposition skin flap is a reliable method to repair the cheek skin defect. The preoperative flap design is very important for successful reconstruction.
authors.affiliation: Plastic and Cosmetic Surgery Department, Peking Hospital of Integrated Chinese with Western Medicine, Beijing 100039, China.
authors.forename: Shou-Duo
authors.initials: SD
authors.lastname: Hu
authors.forename: Hai-Ming
authors.initials: HM
authors.lastname: Zhang
authors.forename: Yue-Jian
authors.initials: YJ
authors.lastname: Feng
authors.forename: Ya-Ni
authors.initials: YN
authors.lastname: Zhong
authors.forename: Yan-Yong
authors.initials: YY
authors.lastname: Zhao
authors.forename: Hong-Xing
authors.initials: HX
authors.lastname: Zhuang
mesh_terms: D000293:Adolescent; D000328:Adult; D002610:Cheek / Q000601:surgery*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008875:Middle Aged; D019651:Plastic Surgery Procedures / Q000379:methods*; D013524:Surgical Flaps / Q000145:classification; D015626:Tissue Expansion; D014945:Wound Healing; D055815:Young Adult